ICCAS OpenIR
Investigation on interaction between sodium dodecyl sulfate and polyacrylamide by electron spin resonance and ultraviolet spectrum
Hai, MT; Han, BX; Yan, HK
2001-05-31
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY B
ISSN1089-5647
Volume105Issue:21Pages:4824-4826
AbstractThe interaction between sodium dodecyl sulfate (SDS) and polyacrylamide (PAM) has been studied by electron spin resonance (ESR) and UV methods using 2,4-dinitrophenylhydrazone of 2,2,6,6-tetramethyl-4-piperidin-1-oxyl (DNPHTEMPO) as a probe. Our results confirm that micellization on the polymer chains occurs at a lower surfactant concentration (critical aggregation concentration (CAC)) than the critical micelle concentration (cmc) of SDS and that a large number of free surfactants are in equilibrium with bound surfactants in this micellization regime. Polymer-complexed micelles are formed by complexation of SDS micelles with PAM. Binding of the spin probe to the surfactant aggregates is revealed by a substantial increase of the apparent rotational correlation time (tau (C)) and a decrease of the nitrogen hyperfine splitting constant (AN) relative to the corresponding parameters for the free radical in bulk water. The micropolarity of the solution decreases with increasing SDS concentration. The polymer-micelle aggregates form a more compact structure at the binding sites, The two breakpoints of the SDS-PAM system, CAC and the polymer saturation point (PSP), were obtained from the maximum absorption bands lambda (max).
DOI10.1021/jp003378s
Indexed BySCI
Language英语
WOS IDWOS:000169036800007
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/76998
Collection中国科学院化学研究所
Corresponding AuthorHan, BX
Affiliation1.Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Beijing 100080, Peoples R China
2.Zibo Univ, Dept Biol & Chem Engn, Zibo 255013, Peoples R China
Recommended Citation
GB/T 7714
Hai, MT,Han, BX,Yan, HK. Investigation on interaction between sodium dodecyl sulfate and polyacrylamide by electron spin resonance and ultraviolet spectrum[J]. JOURNAL OF PHYSICAL CHEMISTRY B,2001,105(21):4824-4826.
APA Hai, MT,Han, BX,&Yan, HK.(2001).Investigation on interaction between sodium dodecyl sulfate and polyacrylamide by electron spin resonance and ultraviolet spectrum.JOURNAL OF PHYSICAL CHEMISTRY B,105(21),4824-4826.
MLA Hai, MT,et al."Investigation on interaction between sodium dodecyl sulfate and polyacrylamide by electron spin resonance and ultraviolet spectrum".JOURNAL OF PHYSICAL CHEMISTRY B 105.21(2001):4824-4826.
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